Artificial leather

ABSTRACT

The present disclosure is relates to an artificial leather. The artificial leather includes multi-layer thermoplastic polyurethane (TPU) mesh layers. Fiber fineness of the TPU mesh layers ranges from 5 μm to 30 μm, and peeling strength of the TPU mesh layers is greater than 2.5 Kg/cm.

FIELD

The disclosure relates to an artificial leather.

BACKGROUND

In the prior art, a multilayer artificial leather is universallymanufactured by using a plurality of different manufacturing processes,and solvents need to be used in some manufacturing processes, forexample, manufacturing processes that include resin dipping or fiberdissolving and removing. However, the foregoing manufacturing methodmakes a manufacturing process more complex, and does not meet arequirement for environmental protection.

SUMMARY OF THE INVENTION

In accordance with one aspect of the present disclosure, an artificialleather includes multi-layer thermoplastic polyurethane (TPU) meshlayers, and fiber fineness of the TPU mesh layers ranges from 5 μm to 30μm.

In accordance with another aspect of the present disclosure, amanufacturing method of an artificial leather includes: providing TPUpellets; heating TPU pellets to be melted; meltblowing the melted TPU toform a first TPU mesh layer; meltblowing the melted TPU to form a secondTPU mesh layer on the first TPU mesh layer, and form a multi-layer TPUmesh layer structure; and heat pressing the multi-layer TPU mesh layerstructure to form an artificial leather.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are understood from the followingdetailed description when read with the accompanying figures. It isemphasized that, in accordance with the standard practice in theindustry, various features are not drawn to scale. In fact, thedimensions off the various features may be arbitrarily increased orreduced for clarity of discussion.

FIG. 1 is a schematic structural diagram of an artificial leatheraccording to an embodiment of the present disclosure.

FIG. 2 is a schematic flowchart of a manufacturing method of anartificial leather according to an embodiment of the present invention.

FIG. 3 is a schematic of a manufacturing device of an artificial leatheraccording to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

It is to be understood that the following disclosure provides manydifferent embodiments or examples, for implementing different featuresof various embodiments. Specific examples of components and arrangementsare described below to simplify the present disclosure. The presentdisclosure may, however, be embodied in many different forms and shouldnot be construed as being limited to the embodiments set forth herein;is rather, these embodiments are provided so that this description willbe thorough and complete, and will frill_(y) convey the presentdisclosure to those of ordinary skill in the art. It will be apparent,however, that one or more embodiments may be practiced without thesespecific details.

In addition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.

It will be understood that when an element is referred to as being “on”another element, it can be directly on the other element or interveningelements may be present. In contrast, when an element is referred to asbeing “directly on” another element, there are no intervening elementspresent.

It will be understood that singular forms “a”, “an” and the are intendedto include the plural forms as well, unless the context clearlyindicates otherwise.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this invention belongs.

It will be further understood that terms; such as those defined incommonly used dictionaries, should be interpreted as having a meaningthat is consistent with their meaning in the context of the relevant artand the present disclosure, and will not be interpreted in an idealizedor overly formal sense unless expressly so defined herein.

FIG. 1 is a schematic structural diagram of an artificial leatheraccording to an embodiment of the present disclosure. Referring to FIG.1, in an embodiment, an artificial leather 10 includes multi-layerthermoplastic polyurethane (TPU) mesh layers 11 and 12, fiber finenessof the TPU mesh layers 11 and 12 ranges from 5 μm to 30 μm, and the TPUmesh layers 11 and 12 include a surface TPU mesh layer 12. Theartificial leather 10 may be applied to a shoes upper material, or maybe applied to a shoes upper material of a sport shoe, but is not limitedto the foregoing.

In an embodiment, the TPU mesh layers include a first TPU mesh layer 11and a second TPU mesh layer 12. Fiber fineness of the first TPU meshlayer 11 ranges from 10 μm to 30 μm, and fiber fineness of the secondTPU mesh layer 12 ranges from 5 μm to 10 μm. The second TPU mesh layer12 is disposed on the first TPU mesh layer 11, and the second TPU meshlayer 12 is the surface TPU mesh layer.

In an embodiment, the second TPU mesh layer 12 has a surface 121, andthe surface 121 may have a texture, or the surface 121 may have ateasing structure. Therefore, the artificial leather 10 can achieve handfeel or an aesthetic texture effect of a teasing leather.

In an embodiment, peeling strength of the TPU mesh layers of theartificial leather 10 is greater than 2.5 Kg/cm, and a disadvantage thata shoes upper material of a conventional sport shoe cannot achieve highpeeling strength can be overcome.

In an embodiment, the artificial leather 10 further includes at leastone combination joint 111, formed between the two adjacent TPU meshlayers 11 and 12, The TPU mesh layers are made of a same TPU material,and are formed through stacking in a meltblowing manner. Therefore,during the meltblowing and the stacking, a combination joint 111 may beformed between the two adjacent TPU mesh layers, to more firmly combinethe two adjacent TPU mesh layers, and peeling strength of the TPU meshlayers can be increased.

In an embodiment, the TPU mesh layers include a first TPU mesh layer, asecond TPU mesh layer, and a third TPU mesh layer. Fiber fineness of thefirst TPU mesh layer ranges from 10 μm to 30 μm, fiber fineness of thesecond TPU mesh layer ranges from 10 μm to 30 μm, fiber fineness of thethird TPU mesh layer ranges from 5 μm to 10 μm, and the third TPU meshlayer is the surface TPU mesh layer. The second TPU mesh layer isdisposed on the first TPU mesh layer, and the third TPU mesh layer isdisposed on the second TPU mesh layer.

Therefore, a range of the fiber fineness of the surface TPU mesh layeris different from a range of fiber fineness of another TPU mesh layer,and the fiber fineness of the surface TPU mesh layer ranges from 5 μm to10 μm, so that the peeling strength of the TPU mesh layers of theartificial leather 10 can be increased to be greater than 2.5 Kg/cm, andpreferred peeling strength may be 3 Kg/cm, to satisfy a standard of highpeeling strength of the shoes upper material.

FIG. 2 is a schematic flowchart of a manufacturing method of anartificial leather according to an embodiment of the present invention.FIG. 3 is a schematic of a manufacturing device of an artificial leatheraccording to an embodiment of the present disclosure. A manufacturingmethod of manufacturing the artificial leather by using an artificialleather manufacturing device 30 is described with reference to FIG. 2and FIG. 3. First, referring to step S21, TPU pellets 37, 38, and 39 areprovided. In an embodiment, TPU pellets include TPU pellets whosemelting point is 118° C. and whose Shore Durometer is 90 A, TPU pelletswhose melting point is 70° C. and whose Shore Durometer is 90 A, and TPUpellets whose melting point is 192° C. and whose Shore Durometer is 90A, but are not limited to the foregoing.

Referring to step S22, TPU pellets are heated to melt. In an embodiment,TPU pellets are melted to the melted TPU by using an extruder 31, andthe melting temperature of the extruder 31 is 190 to 230° C.

Referring to step S23, meltblowing is performed on the melted TPU, toform a first TPU mesh layer 11. In an embodiment, the melted TPU isblown out by using a meltblowing die-body M1 and pressurized air.Preferably, the temperature of the meltblowing die-body M1 is 220 to240° C., and the air pressure and the air temperature of the pressurizedair are respectively 6 to 8 kgf/cm² and 220 to 250° C.

In an embodiment, the first TPU mesh layer 11 may be meltblown onto apiece of release paper 41, the release paper 41 has a texture, and thefiber fineness of the first TPU mesh layer 11 ranges from 5 μm to 10 μm.

In an embodiment, the melted TPU may be meltblown onto a hole conveyorbelt 34, TPU fibers are piled up to form a mesh, and air pressure arereleased by using the hole conveyor belt 34, to form the first TPU meshlayer. The fiber fineness of the first WU mesh layer ranges from 10 μmto 30 μm.

Referring to step S24, meltblowing is performed on the melted TPU, toform a second TPU mesh layer 12 on the first TPU mesh layer 11, and forma multi-layer TPU mesh layer structure. In an embodiment, the melted TPUis blown out by using a meltblowing die-body M2 and pressurized air.Preferably, the temperature of the meltblowing die-body M2 is 220 to240° C., and the air pressure and the air temperature of the pressurizedair are respectively 6 to 8 kg/cm² and 220 to 250° C.

In an embodiment, the fiber fineness of the second TPU mesh layer 12ranges from 5 μm to 10 μm. The second TPU mesh layer 12 is the surfaceTPU mesh layer.

In an embodiment, the fiber fineness of the second TPU mesh layer 12ranges from 10 μm to 30 μm, and the second WU mesh layer is not thesurface TPU mesh layer. The manufacturing method of the artificialleather further includes a step of performing meltblowing on the meltedTPU, to form a third TPU mesh layer 13 on the second TPU mesh layer 12.Fiber fineness of the third TPU mesh layer 13 ranges from 5 μm to 10 μm.The third TPU mesh layer is the surface TPU mesh layer. The multi-layerWU mesh layer structure includes: the first TPU mesh layer 11, thesecond. TPU mesh layer 12, and the third TPU mesh layer 13.

Referring to step S25, the multi-layer TPU mesh layer structure is heatpressed, to manufacture an artificial leather. In an embodiment, themulti-layer TPU mesh layer structure is heat pressed by using a heatpressing wheel 35, and the heat pressing wheel 35 may have a surfacetexture, so that the surface TPU mesh layer (the second TPU mesh layeror the third TPU mesh layer) has the surface texture.

In an embodiment, the manufacturing method of the artificial leatherfurther includes a grinding step of performing surface grinding on thesurface TPU mesh layer (the second TPU mesh layer or the third TPU meshlayer) by using a grinding machine, so that the surface TPU mesh layer(the second TPU mesh layer or the third TPU mesh layer) is formed ateasing structure.

In an embodiment, the manufacturing method of the artificial leatherfurther includes a step of disposing a TPU thin film on the second TPUmesh layer. The step of heat pressing the multi-layer TPU mesh layerstructure includes heat pressing the multi-layer TPU mesh layerstructure by using a heat pressing wheel, and the heat pressing wheelhas a surface texture, so that the TPU thin film has the surfacetexture.

According to the manufacturing method of the artificial leather in thepresent disclosure, the artificial leather can be manufactured by usingonly a simple meltblowing manufacturing procedure, greatly simplifying aworking process of manufacturing the artificial leather, and no solventis used in a meltblowing manufacturing procedure, satisfying arequirement for environmental protection. In addition, TPU is used forboth the first TPU mesh layer and the second TPU mesh layer, and the TPUis an environmentally-friendly material not including a solvent, and isrecyclable. In addition, in the present disclosure, TPU mesh layers of asame material is stacked by using the meltblowing manufacturingprocedure, and peeling strength of the artificial leather can be greatlyincreased.

The present disclosure is illustrated in detail with the followingembodiments, but it does not mean that the present disclosure is onlylimited to the content disclosed by these embodiments.

Embodiment 1

Referring to FIG. 2 and FIG. 3, TPU pellets 37 whose melting point is118° C. and whose Shore Durometer is 90 A are put into an extruder 31for melting, and the temperature is set to 190° C., 210° C., 220° C.,and 230° C. successively from a feed area to a discharge area. After themelting, the melted TPU is delivered into a meltblowing die-body M1, andthe temperature of the meltblowing die-body M1 is set to 230° C. Inaddition, pressurized air is connected to the meltblowing die-body M1,and air pressure of the pressurized air is 7 kgf/cm². In addition, theair is heated, the temperature of the heating is set to 240° C., and theair is delivered into the meltblowing die-body M1. When the air is blownout, the melted TPU is blown out at the same time, to form a TPU fiber,and then the TPU fiber is melted and blown onto a piece of release paper41 having a texture. The fiber is piled up to form a mesh, and thetexture of the release paper is directly transferred, to form a firstTPU mesh layer 11. Fiber fineness of the first TPU mesh layer 11 rangesfrom 5 μm to 10 μm. The first TPU mesh layer 11 is the surface TPU meshlayer, and has the texture.

TPU pellets 38 whose melting point is 70° C. and whose Shore Durometeris 90 A are put into an extruder 32 for melting, and the temperature isset to 1.90° C., 210° C., 210° C., and 220° C. successively from a feedarea to a discharge area. After the melting, the melted TPU is deliveredinto a meltblowing die-body M2, and the temperature of the meltblowingdie-body M2 is set to 230° C. In addition, pressurized air is connectedto the meltblowing die-body M2, and air pressure of the pressurized airis 7 kgf/cm². In addition, the air is heated, the temperature of theheating is set to 240° C., and the air is delivered into the meltblowingdie-body M2. When the air is blown out, the melted TPU is blown out atthe same time, to from a second TPU mesh layer 12 onto the first TPUmesh layer 11, and fiber fineness of the second TPU mesh layer 12 rangesfrom 10 μm to 30 μm, TPU pellets 39 whose melting point is 192° C. andwhose Shore Durometer is 90 A are put into an extruder 33 for melting,and the temperature is set to 195° C., 220° C., 230° C., and 240° C.successively from a feed area to a discharge area. After the melting,the melted TPU is delivered into a meltblowing die-body M3, and thetemperature of the meltblowing die-body M3 is set to 230° C. Inaddition, pressurized air is connected to the meltblowing die-body M3,and air pressure of the pressurized air is 7 kgf/cm². In addition, theair is heated, the temperature of the heating is set to 240° C., and theair is delivered into the meltblowing die-body M3, When the air is blownout, the melted TPU is blown out at the same time, to from a third TPUmesh layer 13 onto the second TPU mesh layer 12, and fiber fineness ofthe third TPU mesh layer 13 ranges from 10 μm to 30 μm. The first TPUmesh layer 11, the second TPU mesh layer 12, and the third TPU meshlayer 13 are formed as the multi-layer TPU mesh layer structure.

Next, the multi-layer TPU mesh layer structure is heat pressed by usinga heat pressing wheel 35 whose temperature is 145° C., to control thethickness and the flatness. In addition, the second TPU mesh layer 12 ismade of TPU whose melting point is 70° C. Therefore, after the secondTPU mesh layer 12 is melted by the heat pressing wheel 35, peelingstrength between the first TPU mesh layer 11 and the third TPU meshlayer 13 can be increased to be greater than 2.5 Kg/cm.

Embodiment 2

Referring to FIG. 2 and FIG. 3, TPU pellets 37 whose melting point is192° C. and whose Shore Durometer is 90A are put into an extruder 31 formelting, and the temperature is set to 195° C., 220° C., 230° C., and240° C. successively from a feed area to a discharge area. After themelting, the melted TPU is delivered into a meltblowing die-body M1, andthe temperature of the meltblowing die-body M1 is set to 240° C. Inaddition, pressurized air is connected to the meltblowing die-body M1,and air pressure of the pressurized air is 7 kgf/cm². In addition, theair is heated, the temperature of the heating is set to 240° C., and theair is delivered into the meltblowing die-body M1. When the air is blownout, the melted TPU is blown out at the same time, to form a TPU fiber.Then, the TPU fiber is piled up to form a mesh using a hole conveyorbelt 34, and the high speed pressure are released by the hole conveyorbelt 34 to form a first TPU mesh layer 11. Fiber fineness of the firstTPU mesh layer 11 ranges from 10 μm to 30 μm.

TPU pellets 38 whose melting point is 70° C. and whose Shore Durometeris 90 A are put into an extruder 32 for melting, and the temperature isset to 189° C., 211° C., 210° C., and 223° C. successively from a feedarea to a discharge area. After the melting, the melted TPU is deliveredinto a meltblowing die-body M2, and the temperature of the meltblowingdie-body M2 is set to 240° C. In addition, pressurized air is connectedto the meltblowing die-body M2, and air pressure of the pressurized airis 7 kgf/cm². In addition, the air is heated, the temperature of theheating is set to 240° C., and the air is delivered into the meltblowingdie-body M2. When the air is blown out, the melted TPU is blown out atthe same time, to from a second TPU mesh layer 12 onto the first TPUmesh layer 11, and fiber fineness of the second TPU mesh layer 12 rangesfrom 10 μm to 30 μm.

TPU pellets 39 whose melting point is 192° C. and whose Shore Durometeris 90 A are put into an extruder 33 for melting, and the temperature isset to 1.95° C., 223° C., 232° C., and 240° C. successively from a feedarea to a discharge area. After the melting, the melted TPU is deliveredinto a meltblowing die-body M3, and the temperature of the meltblowingdie-body M3 is set to 240° C. In addition, pressurized air is connectedto the meltblowing die-body M3, and air pressure of the pressurized airis 7 kgf/cm². In addition, the air is heated, the temperature of theheating is set to 240° C., and the air is delivered into the meltblowingdie-body M3. When the air is blown out, the melted TPU is blown out atthe same time, to from a third TPU mesh layer 13 onto the second TPUmesh layer 12, and fiber fineness of the third TPU mesh layer 13 rangesfrom 5 to 10 μm. The first TPU mesh layer 11, the second TPU mesh layer12, and the third TPU mesh layer 13 are formed as the multi-layer TPUmesh layer structure.

Next, the multi-layer TPU mesh layer structure is heat pressed by usinga heat pressing wheel 35 whose temperature is 145° C., to control thethickness and the flatness. In addition, the second TPU mesh layer 12 ismade of TPU whose melting point is 70° C. Therefore, after the secondTPU mesh layer 12 is melted by the heat pressing wheel 35, peelingstrength between the first TPU mesh layer 11 and the third TPU meshlayer 13 can be increased to be greater than 2.5 Kg/cm.

Finally, after surface grinding is performed on the third TPU mesh layer13 by using an 80-mesh/160-mesh/400-mesh grinding machine, a teasingartificial leather can be manufactured.

Embodiment 3

Referring to FIG. 2 and FIG. 3, TPU pellets 37 whose melting point is118° C. and whose Shore Durometer is 90 A are put into an extruder 31for melting, and the temperature is set to 189° C., 211° C., 223° C.,and 232° C. successively from a feed area to a discharge area. After themelting, the melted TPU is delivered into a meltblowing die-body M1, andthe temperature of the meltblowing die-body M1 is set to 230° C. Inaddition, pressurized air is connected to the meltblowing die-body M1,and air pressure of the pressurized air is 7 kgf/cm². In addition, theair is heated, the temperature of the heating is set to 239° C., and theair is delivered into the meltblowing die-body M1, When the air is blownout, the melted TPU is blown out at the same time, to form a TPU fiber.Then, the TPU fiber is piled up to form a mesh using a hole conveyorbelt 34, and the high speed wind pressure are released by the holeconveyor belt 34 to form a first TPU mesh layer 11. Fiber fineness ofthe first TPU mesh layer 11 ranges from 10 μm to 30 μm.

TPU pellets 38 whose melting point is 70° C. and whose Shore Durometeris 90 A are put into an extruder 32 for melting, and the temperature isset to 189° C., 200° C., 212° C., and 220° C. successively from a feedarea to a discharge area. After the melting, the melted TPU is deliveredinto a meltblowing die-body M2, and the temperature of the meltblowingdie-body M2 is set to 230° C. In addition, pressurized air is connectedto the meltblowing die-body M2, and air pressure of the pressurized airis 7 kgf/cm². In addition, the air is heated, the temperature of theheating is set to 239° C., and the air is delivered into the meltblowingdie-body M2. When the air is blown out, the melted TPU is blown out atthe same time, to from a second TPU mesh layer 12 onto the first TPUmesh layer 11, and fiber fineness of the second TPU mesh layer 12 rangesfrom 10 μm to 30 μm.

TPU pellets 39 whose melting point is 192° C. and whose Shore Durometeris 90 A are put into an extruder 33 for melting, and the temperature isset to 195° C., 220° C., 230° C., and 240° C. successively from a feedarea to a discharge area. After the melting, the melted TPU is deliveredinto a meltblowing die-body M3, and the temperature of the meltblowingdie-body M3 is set to 230° C. In addition, pressurized air is connectedto the meltblowing die-body M3, and air pressure of the pressurized airis 7 kgf/cm². In addition, the air is heated, the temperature of theheating is set to 239° C., and the air is delivered into the meltblowingdie-body M3. When the air is blown out, the melted TPU is blown out atthe same time, to from a third TPU mesh layer 13 onto the second TPUmesh layer 12, and fiber fineness of the third TPU mesh layer 13 rangesfrom 5 μm to 10 μm. The first TPU mesh layer 11, the second TPU meshlayer 12, and the third TPU mesh layer 13 are formed as the multi-layerTPU mesh layer structure.

Next, the multi-layer TPU mesh layer structure is heat pressed by usinga heat pressing wheel 35 whose temperature is 145° C., to control thethickness and the flatness. In addition, the second TPU mesh layer 12 ismade of TPU whose melting point is 70° C. Therefore, after the secondTPU mesh layer 12 is melted by the heat pressing wheel 35, peelingstrength between the first TPU mesh layer 11 and the third TPU meshlayer 13 can be increased to be greater than 2.5 Kg/cm.

Embodiment 4

Referring to FIG. 2 and FIG. 3, TPU pellets 37 whose melting point is192° C. and whose Shore Durometer is 90 A are put into an extruder 31for melting, and the temperature is set to 195° C., 220° C., 230° C.,and is 240° C. successively from a feed area to a discharge area. Afterthe melting, the melted TPU is delivered into a meltblowing die-body M1,and the temperature of the meltblowing die-body M1 is set to 240° C. Inaddition, pressurized air is connected to the meltblowing die-body M1,and air pressure of the pressurized air is 7 kgf/cm². In addition, theair is heated, the temperature of the heating is set to 240° C., and theair is delivered into the meltblowing die-body M1. When the air is blownout, the melted TPU is blown out at the same time, to form a TPU fiber.Then, the TPU fiber is piled up to form a mesh using a hole conveyorbelt 34, and the high speed wind pressure are released by the holeconveyor belt 34 to form a first TPU mesh layer 11. Fiber fineness ofthe first TPU mesh layer 11 ranges from 10 μm to 30 μm.

TPU pellets 38 whose melting point is 70° C. and whose Shore Durometeris 90 A are put into an extruder 32 for melting, and the temperature isset to 189° C., 200° C., 212° C., and 220° C. successively from a feedarea to a discharge area. After the melting, the melted. TPU isdelivered into a meltblowing die-body M2, and the temperature of themeltblowing die-body M2 is set to 240° C. In addition, pressurized airis connected to the meltblowing die-body M2, and air pressure of thepressurized air is 7 kgf/cm². In addition, the air is heated, thetemperature of the heating is set to 240° C. and the air is deliveredinto the meltblowing die-body M2. When the air is blown out, the meltedTPU is blown out at the same time, to from a second TPU mesh layer 12onto the first TPU mesh layer 11, and fiber fineness of the second TPUmesh layer 12 ranges from 5 μm to 10 μm.

Then, a TPU thin film is disposed on the second TPU mesh layer. Thethickness of the TPU thin film is 0.05 mm. The material of the TPU thinfilm is the same as that of the second TPU mesh layer. The first TPUmesh layer 11, the second TPU mesh layer 12, and the TPU thin film areformed as the multi-layer TPU mesh layer structure.

Next, the multi-layer TPU mesh layer structure is heat pressed by usinga heat pressing wheel 35 whose temperature is 145° C., to control thethickness and the flatness. The heat pressing wheel 35 has a surfacetexture, so that the TPU thin film has the surface texture. In addition,the second TPU mesh layer 12 is made of TPU whose melting point is 70°C. Therefore, after the second TPU mesh layer 12 is melted by the heatpressing wheel 35, peeling strength between the first TPU mesh layer 11and the TPU thin film can be increased to be greater than 2.5 Kg/cm.

Moreover, the scope of the present application is not intended to belimited to the particular embodiments of the process, machine,manufacture, and composition of matter, means, methods and stepsdescribed in the specification. As those skilled in the art will readilyappreciate form the present disclosure, processes, machines,manufacture, compositions of matter, means, methods, or steps, presentlyexisting or later to be developed, that perform substantially the samefunction or achieve substantially the same result as the correspondingembodiments described herein may be utilized in accordance with someembodiments of the present disclosure.

Accordingly, the appended claims are intended to include within theirscope such processes, machines, manufacture, and compositions of matter,means, methods or steps. In addition, each claim constitutes a separateembodiment, and the combination of various claims and embodiments arewithin the scope of the invention.

What is claimed is:
 1. An artificial leather, comprising: multi-layerthermoplastic polyurethane (TPU) mesh layers, wherein fiber fineness ofthe TPU mesh layers ranges from 5 μm to 30 μm, and peeling strength ofthe TPU mesh layers is greater than 2.5 Kg/cm; and wherein the TPU meshlayers are made of TPU particles, said TPU particles include TPUparticles whose melting point is 110-130° C. and whose Shore scleroscopehardness is 80-95A, TPU particles whose melting point is 65-80° C. andwhose Shore scleroscope hardness is 80-95A, and TPU particles whosemelting point is 180-200° C. and whose Shore scleroscope hardness is80-95A.
 2. The artificial leather of claim 1, wherein the TPU meshlayers comprise a first TPU mesh layer, and fiber fineness of the firstTPU mesh layer ranges from 10 μm to 30 μm.
 3. The artificial leather ofclaim 2, wherein the TPU mesh layers further comprise a second TPU meshlayer disposed on the first TPU mesh layer, and fiber fineness of thesecond TPU mesh layer ranges from 5 μm to 10 μm, the second TPU meshlayer is a surface TPU mesh layer.
 4. The artificial leather of claim 2,wherein the TPU mesh layers further comprise a second TPU mesh layerdisposed on the first TPU mesh layer, and fiber fineness of the secondTPU mesh layer ranges from 10 μm to 30 μm.
 5. The artificial leather ofclaim 4, wherein the TPU mesh layers further comprise a third TPU meshlayer disposed on the second TPU mesh layer, and fiber fineness of thethird TPU mesh layer ranges from 5 μm to 10 μm; the third TPU mesh layeris a surface TPU mesh layer.
 6. The artificial leather of claim 1,further comprising at least one combination joint formed between the twoadjacent TPU mesh layers.